ICST AV2002Y, AV2002V, ICS2002V, ICS2002Y Datasheet

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ICS2002

Integrated

Circuit

Systems, Inc.

WavedecDigital Audio Codec

Description

The ICS2002 is a mixed-signal integrated circuit providing a low-cost recording and playback solution for multimedia audio applications. These applications include document annotation, voice mail, interactive games, multimedia sound record/playback, and Windowssound production. The ICS2002 supports the record and playback of 16-bit audio data, and provides a 8/16-bit parallel interface to the industry standard PC bus.

Block Diagram

Features

Digital audio 8/16-bit record/playback

Fully programmable sample rates including industry standards:

-44.1 kHz

-22.050 kHz

-11.025 kHz

-8.00 kHz

-5.513 kHz

DAC output oversampled to simplify external filtering.

Four data formats:

-16 bit linear

-8 bit linear

-8 bit u-law

-8 bit a-law

16 step analog output level control, -1.5dB/step

8-bit log scale digital volume control

Oversampling ADC with input filter.

Programmable IIR filters for input anti-aliasing and output reconstruction.

ISA bus interface

8/16-bit DMA and I/O transfer modes

Input/output FIFO buffer

Power-down mode

44-pin PLCC package

Wavedec is a trademark of Integrated Circuit Systems, Inc.

ICS2002RevF093094

ICS2002

Pin Descriptions

 

 

 

 

 

PIN

TYPE

DESCRIPTION

 

 

 

 

 

 

 

 

 

 

 

 

 

SD15 - SD0

I/O

Data bus

 

SA1 - SA0

I

Address

 

 

 

 

 

 

 

 

 

 

I

Chip select (active low)

 

CS

 

 

 

 

 

 

 

 

 

I

Write strobe (active low)

 

IOW

 

 

 

 

 

 

 

 

I

Read strobe (active low)

 

IOR

 

 

 

 

 

 

 

I

System High Byte Enable (active low)

 

SBHE

 

 

 

 

 

 

OC

Indicates that the access register can support 16 bit transfer.

 

IOCS16

 

DRQP

O

DMA Request (play channel)

 

DRQR

O

DMA Request (record channel)

 

 

 

 

 

I

DMA Acknowledge (play channel)

 

DACKP

 

 

 

 

I

DMA Acknowledge (record channel)

 

DACKR

 

TC

I

DMA terminal count

 

IRQ

O

Interrupt request (active high, open drain)

 

RESET

I

Reset (active high)

 

XTLI

I

Crystal oscillator

 

XTLO

O

Crystal oscillator

 

 

 

I

Power-down (active low)

 

PWRDN

 

AUDIOIN

AI

Audio buffer input

 

ADCIN

AO

Audio buffer output/input to ADC

 

DACOUT

AO

DAC audio output

 

BUFIN

AI

Uncommitted audio buffer input

 

BUFOUT

AO

Uncommitted audio buffer output

 

VDD

P

Digital +5V supply

 

VDDA

P

Analog +5V supply

 

VDDP

P

Digital +5V supply

 

VSS

P

Digital GND

 

VSSA

P

Analog GND

 

VSSP

P

Digital GND

 

 

 

 

 

 

 

 

 

 

 

 

2

ICST AV2002Y, AV2002V, ICS2002V, ICS2002Y Datasheet

ICS2002

Package Pinout

44-Pin PLCC

44-Pin TQFP

3

ICS2002

Absolute Maximum Ratings

Supply Voltage . . . . . . . . . . . . . . . . . . . . . . -0.5V to 7.0V

Logic Inputs . . . . . . . . . . . . . . . . . . . -0.5V to VDD + 0.5V

Ambient Operating Temperature. . . . . . . . . . 0°C to 70°C

Storage Temperature . . . . . . . . . . . . . . . . . -65°C to 150°C

Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect product reliability.

Electrical Characteristics

VDD = 5.0V ± 10%; GND = 0V; TA = 0°C to +70°C

DC/STATIC

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

Digital Inputs

 

 

 

 

 

Input Low Voltage

VIL

-0.3

 

0.8

V

Input High Voltage

VIH

2.0

 

VDD + 0.3

V

Input Leakage Current

ILI

 

 

1

μA

Input Capacitance

CIN

 

 

7

pF

Digital Outputs

 

 

 

 

 

Output Low Voltage (IOL = 4.0mA)

VOL

 

 

0.4

V

Output High Voltage (IOH = 0.4mA)

VOH

2.4

 

 

V

Tristate Current

IOZ

 

 

10

μA

Output Capacitance

 

 

 

10

pF

Bi-directional Capacitance

 

 

 

10

pF

Analog Inputs

 

 

 

 

 

Audio Input Voltage

 

 

0.7

 

Vrms

Audio Input Impedance

 

500k

 

 

ohm

Buffer Input Impedance

 

500k

 

 

ohm

Audio Outputs

 

 

 

 

 

Audio Output Voltage

 

 

0.7

 

Vrms

DACOUT, BUFOUT Output Impedance

 

 

 

1k

ohm

Digital Supply Current

ICC1

 

 

1

mA

Analog Supply Current

IDD2

 

 

35

mA

Power-Down Mode

 

 

 

1

mA

Play Only Mode

 

 

 

15

mA

Record Mode

 

 

 

30

mA

4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ICS2002

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Electrical Characteristics

 

 

 

 

 

 

VDD = 5.0V ± 10%; GND =0V; TA = 0°C to +70°C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AC/DYNAMIC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PARAMETER

SYMBOL

MIN

TYP

MAX

 

UNITS

 

Address setup to command

tAS

10

 

 

 

ns

 

Address hold from command

tAH

10

 

 

 

ns

 

Command cycle time

tCCY

100

 

 

 

ns

 

Address valid to /IOCS16 delay

tAID

 

 

50

 

ns

 

IOCS16 hold from address invalid

tIH

0

 

 

 

ns

 

Data valid to /IOW

tDS

50

 

 

 

ns

 

/IOR active to valid data

tDAC

 

 

60

 

ns

 

Data hold after /IOR

tDHR

0

 

 

 

ns

 

Data hold after /IOW

tDHW

10

 

 

 

ns

 

/DACK setup to /IOR

tDAR

30

 

 

 

ns

 

/DACK setup to /IOW

tDAW

50

 

 

 

ns

 

/DACK hold from command

tDAH

50

 

 

 

ns

 

/CS setup to command

tCS

10

 

 

 

ns

 

/CS hold from command

tCH

10

 

 

 

ns

 

TC setup to command inactive

tTS

25

 

 

 

ns

 

TC hold from command

tTH

0

 

 

 

ns

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

ICS2002

6

ICS2002

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